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stm32mp1: board: add environment variable for board id and board rev 

Add variable to identify board with HW id (read from OTP)
and revision.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
This commit is contained in:
Patrick Delaunay 2019-07-30 19:16:37 +02:00 committed by Patrice Chotard
parent 49ef8e134e
commit 8b8b3d6b55
1 changed files with 19 additions and 0 deletions
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19
board/st/stm32mp1/stm32mp1.c
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@ -539,6 +539,10 @@ int board_late_init(void)
#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
const void *fdt_compat; const void *fdt_compat;
int fdt_compat_len; int fdt_compat_len;
int ret;
u32 otp;
struct udevice *dev;
char buf[10];
fdt_compat = fdt_getprop(gd->fdt_blob, 0, "compatible", fdt_compat = fdt_getprop(gd->fdt_blob, 0, "compatible",
&fdt_compat_len); &fdt_compat_len);
@ -548,6 +552,21 @@ int board_late_init(void)
else else
env_set("board_name", fdt_compat + 3); env_set("board_name", fdt_compat + 3);
} }
ret = uclass_get_device_by_driver(UCLASS_MISC,
DM_GET_DRIVER(stm32mp_bsec),
&dev);
if (!ret)
ret = misc_read(dev, STM32_BSEC_SHADOW(BSEC_OTP_BOARD),
&otp, sizeof(otp));
if (!ret && otp) {
snprintf(buf, sizeof(buf), "0x%04x", otp >> 16);
env_set("board_id", buf);
snprintf(buf, sizeof(buf), "0x%04x",
((otp >> 8) & 0xF) - 1 + 0xA);
env_set("board_rev", buf);
}
#endif #endif
/* for DK1/DK2 boards */ /* for DK1/DK2 boards */